Be careful how you do one man a pleasure which must needs occasion equal displeasure in another. For he who is thus slighted will not forget, but will think the offence to himself the greater in that another profits by it; while he who receives the pleasure will either not remember it, or will consider the favour done him less than it really was.

Let no one trust so entirely to natural prudence as to persuade himself that it will suffice to guide him without help from experience.

Be careful how you do one man a pleasure which must needs occasion equal displeasure in another. For he who is thus slighted will not forget, but will think the offence to himself the greater in that another profits by it; while he who receives the pleasure will either not remember it, or will consider the favour done him less than it really was.

Ambition is not in itself an evil; nor is he to be condemned whose spirit prompts him to seek fame by worthy and honourable ways.

Pay no heed to those who tell you that they have relinquished place and power of their own accord, and from their love of quiet. For almost always they have been brought to this retirement by their insufficiency and against their will.

Keep your eye fixed not so much on what they [people] ought in reason to do, as on what they are likely to do based on their disposition and habits.

Even though many people prove to be ungrateful, do not let that stop you from benefiting others-for not only is beneficence in itself a noble and almost divine quality, it may also happen that while you practice it, you will encounter someone so grateful that he will make up for all the others' ingratitude.